From Polyglot Club WIKI
< Language | Russian | Vocabulary
Here are the main ways to say "Good bye" in Russian:
This form is more formal, people use it in official conversation, with unfamiliar people or with older people. "До встречи", "Всего хорошего", "Увидимся" are equal, but more neutral and not so spreaded
This is an informal form. You can use this word when you talk with your friends or with people who you know well.
Another way is "Прощай". People usually us it when they want to make an accent to a fact that it was the last time they meet, or they hope so. It is similar to "Farewell" in English.